diff --git a/lib/licenses.nix b/lib/licenses.nix
index 9b3acf8653b..09c5fb21606 100644
--- a/lib/licenses.nix
+++ b/lib/licenses.nix
@@ -125,6 +125,16 @@ lib.mapAttrs (n: v: v // { shortName = n; }) rec {
     fullName = "Common Public License 1.0";
   };
 
+  efl10 = spdx {
+    spdxId = "EFL-1.0";
+    fullName = "Eiffel Forum License v1.0";
+  };
+
+  efl20 = spdx {
+    spdxId = "EFL-2.0";
+    fullName = "Eiffel Forum License v2.0";
+  };
+
   epl10 = spdx {
     spdxId = "EPL-1.0";
     fullName = "Eclipse Public License 1.0";